Bob Cringeley makes a bold statement in a blog post responding to Apple's iCloud announcement: "Jobs is going to sacrifice the Macintosh in order to kill Windows." He says, "The incumbent platform today is Windows because it is in Windows machines that nearly all of our data and our ability to use that data have been trapped. But the Apple announcement changes all that. Suddenly the competition isn't about platforms at all, but about data, with that data being crunched on a variety of platforms through the use of cheap downloaded apps."

With 11.04, Canonical are doing a good job of doing that themselves. (IMHO)
Unity is NOT ready. It is unfinished.
Gnome 3 is the same btw.
The distros that adopt it are repeating the KDE4.0 fiasco all over again.(IMHO).

Ubuntu is Zero threat to Apple. Windows 8 is.

But there again, I'm probably a typical GOM (Grumpy old Man) and really hate these dumbed down UI's. I might be getting old (write my fist prog 40 years ago) but I an't ready for the big button phones just yet.